RGB LEDs

RGB LEDs use a combination of three LED chips, all within one package. The RGB stands for ‘Red’, ‘Green’ and ‘Blue’. These three chips can be used in various combinations to make almost any colour. For example, increasing the intensity of the red LED will cause the light to appear redder. This control of colour is called colour mixing. When used in equal amounts of red, green and blue, the RGB LED will create a white light output.

These LEDs come in both through-hole and surface mount (SMD) packages. Popular packages include 5mm (T-1 ¾) or PLCC packages.

How do You Mix Colours on RGB LEDs?

Mixing colours is straight forward. The red, green and blue chips within the LEDs are individually addressable so you can increase/decrease each LED's intensity to create over 16 million different colours. A popular method of colour control is PWM (pulse width modulation).

Where Would You Use an RGB LED?

RGB LEDs are popular for ambient lighting around the home and commercial environments. Their colour changing characteristics are very versatile and commonly used in both bulbs and LED strips. RGB LEDs are also used in LCD backlighting applications and dot matrix displays.

Note

RGB LEDs do not always give the purest white light output, so you may want to consider an RGBW LED if you require a true white.


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Description Price LED Colours Package Type Mounting Type Number of LEDs Forward Voltage Luminous Intensity Radiant Flux Number of Pins Viewing Angle Luminous Flux Lens Shape Dominant Wavelength Dimensions Colour Temperature
RS Stock No. 496-6617
Mfr. Part No.HSMF-A341-A00J1
BrandBroadcom
£1.65
Each
Units
Blue, Green, Red PLCC 4 Surface Mount 3 1.9 V, 3.4 V 160 mcd - 4 120 ° - Round 470 nm 3.2 x 2.8 x 1.8mm -
RS Stock No. 145-6224
Mfr. Part No.CLV1A-FKB-CHMKPEHBB7A463
BrandCree
£0.23
Each (On a Reel of 2000)
Units
Blue, Green, Red PLCC 4 Surface Mount 1 4 V 1.4 cd - 4 - - Round 540 nm - -